Blood Donation From Warfarin Users for the Development of POC INR Monitor
Blood Donation for the Development and Optimisation of the Second Generation Microvisk International Normalized Ratio (INR) Testing System for the Measurement of Prothrombin Time (PT)/INR in Patients on Warfarin Therapy.
Visão geral do estudo
Status
Intervenção / Tratamento
Descrição detalhada
The number of patients receiving anticoagulation therapy with warfarin and other vitamin K antagonists has been rising in recent years. Increasing life expectancy is increasing the proportion of the population having conditions such as Atrial Fibrillation and venous thrombosis, where primary and secondary prevention of thromboembolic complications are best achieved with anticoagulation.
Unpredictable pharmacokinetics, widespread interactions with drugs and food and the narrow therapeutic window make closely monitoring Vitamin K antagonists a necessity. Portable point of care (POC) coagulometers which measure PT from capillary whole blood and provide an INR reading within a few minutes are already widely available throughout North American and Europe. They give comparable results when compared to laboratory based systems are popular with patients and significantly shorten the duration of clinics. In addition, the United Kingdom Department of Health has been encouraging the use of anticoagulation services in Primary Care Trusts the aim being to provide INR monitoring in community clinics and General Practice surgeries relieving pressure on hospital services and reducing inconvenience for patients.
Although coagulometers are now commercially available the Microvisk INR Testing System has been designed to have advantages, particularly in terms of test robustness, user comfort, ease of use and reduction of user error. The present trial has been designed to develop the second generation Microvisk INR Test System; blood samples will also be used to optimise manufacturing processes and verify the quality of Test Strip Lots.
Tipo de estudo
Inscrição (Antecipado)
Estágio
- Não aplicável
Contactos e Locais
Locais de estudo
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Merseyside
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Liverpool, Merseyside, Reino Unido, L7 8XP
- Recrutamento
- Royal Liverpool & Broadgreen University Hospital NHS Trust
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Contato:
- Colin Downey
- Número de telefone: +44 151 706 4322
- E-mail: Colin.Downey@rlbuht.nhs.uk
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Critérios de participação
Critérios de elegibilidade
Idades elegíveis para estudo
Aceita Voluntários Saudáveis
Gêneros Elegíveis para o Estudo
Descrição
Inclusion Criteria:
- Subject is male or female, greater than 18 years of age
- Subject is receiving warfarin (or warfarin-like) therapy as part of their clinical care
- Subject is informed and has been given ample time and opportunity to think about his/her participation and has given his/her written informed consent
Exclusion Criteria:
- Subjects aged <18 years of age
- Subjects who are unable to give written consent
Plano de estudo
Como o estudo é projetado?
Detalhes do projeto
- Finalidade Principal: Diagnóstico
- Alocação: N / D
- Modelo Intervencional: Atribuição de grupo único
- Mascaramento: Solteiro
Armas e Intervenções
Grupo de Participantes / Braço |
Intervenção / Tratamento |
|---|---|
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Experimental: Warfarin Patients
Single Arm - blood collection by venepuncture in patients undergoing Warfarin Therapy
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Venepuncture to collect blood samples from Patients undergoing Warfarin Therapy.
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O que o estudo está medindo?
Medidas de resultados primários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
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The Primary Outcome will be measured in terms of differences in International Normalised Ratio when the Generation 2 system is tested against the Generation 1 system using the blood samples from the same donors.
Prazo: 2 years
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The Primary Outcome will be measured in terms of differences in International Normalised Ratio when the Generation 2 system is tested against the Generation 1 system using the blood samples from the same donors.
Those differences will be reported in terms of accuracy, precision and sensitivity to interferents.
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2 years
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Medidas de resultados secundários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
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The Secondary Outcome will be measured in terms of differences in International Normalised Ratio when the Generation 2 system is tested against the International Standard Method using the blood samples from the same donors.
Prazo: 2 years
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A master batch of test strips will be calibrated against an International Reference Preparation (rTF/09) thromboplastin.
The accuracy of the master batch will be verified using patient samples.
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2 years
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Colaboradores e Investigadores
Patrocinador
Investigadores
- Cadeira de estudo: Cheng-Hock Toh, Professor, Royal Liverpool and Broadgreen University Hospital Trust
Datas de registro do estudo
Datas Principais do Estudo
Início do estudo
Conclusão Primária (Antecipado)
Conclusão do estudo (Antecipado)
Datas de inscrição no estudo
Enviado pela primeira vez
Enviado pela primeira vez que atendeu aos critérios de CQ
Primeira postagem (Estimativa)
Atualizações de registro de estudo
Última Atualização Postada (Estimativa)
Última atualização enviada que atendeu aos critérios de controle de qualidade
Última verificação
Mais Informações
Termos relacionados a este estudo
Termos MeSH relevantes adicionais
Outros números de identificação do estudo
- RDE03
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